Updated url, iso filename and md5 for Archlinux x86_64 template
Avoid creating files called "null" in %TEMP% -- Windows has a real NUL device.
Merge pull request #676 from juliandunn/use-windows-nul-device

Avoid creating files called "null" in %TEMP%
Merge pull request #675 from InTheBlue/updateArchLinuxISO

Updated url, iso filename and md5 for Archlinux x86_64 template
add definition for ubuntu 13.04 (server)
Update Debian 7.0 definitions from RC1 to release.

* Updated ISO URLs.
* Fixed failing virtualbox.sh on i386.
Merge pull request #679 from mickm/update_debian_wheezy

Update Debian 7.0 definitions from RC1 to release.
break up postinstall.sh
install libdbus and fix typos on VirtualBox Guest additions
remove existing VirtualBox guest additions before installing new version
remove ruby and rubygems source after installing them
add /opt/ruby/bin to the global path
Merge pull request #677 from ngpestelos/ubuntu-13-04

add definition for ubuntu 13.04 (server amd64)
Allow installation with obsolete gpg keys
Merge pull request #681 from rds13/master

Fix problem building VM for Debian 5.X from archive.debian.org
Update Debian 6.0.7 ISO URLs
Fix install instructions for old Debian ISOs
Merge pull request #683 from paulhammond/debian-iso-urls

Fix Debian 6.0.x ISO URLs
replace global postinstall.sh script by dedicated scripts
Merge pull request #684 from rds13/master

Replace global postinstall script by dedicated scripts